What is a non-community water system?

A non-community water system refers specifically to a public water system that doesn't serve the same resident population year-round. This definition encompasses various types of water systems, such as those that serve transient users (like users at a campground or a school) but not a stable community, meaning it doesn’t provide water primarily for those who live there full-time.

This distinguishing feature sets it apart from community water systems, which are designed to serve the same population of people permanently or for extended periods. By clarifying that a non-community system is a public water system that does not fall under the classification of a community system, we can understand the broader implications for regulations and water quality monitoring typically associated with any public water system in the United States.

The other options present definitions that either restrict the usage of water systems or mischaracterize what a non-community system entails, thus reinforcing the accuracy of the correct response.